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| Transmission Level 3 (A U.S. telephone standard for a transmission facility at digital signal level 3 (DS3). T3 is equivalent in bandwidth to 28 T1s, and the bit rate is 44.736 megabits per second. T3 is sometimes called a 45-meg circuit) | |||
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| Transmission Level 3 (A U.S. telephone standard for a transmission facility at digital signal level 3 (DS3). T3 is equivalent in bandwidth to 28 T1s, and the bit rate is 44.736 megabits per second. T3 is sometimes called a 45-meg circuit) | |||